In a real-life scenario resembling science fiction, a 100-meter-wide asteroid has prompted global planetary defense measures for the first time. Telescope observations indicate a possible collision with Earth in 2032. To understand the next steps and assess the level of concern, Ian Sample speaks with Richard Binzel, an MIT professor of planetary sciences and the creator of the Torino scale, which is used to classify the threat of asteroids and comets.

Disclaimer: This podcast is taken from The Guardian.